Reversing-gear



(No Model.) 2 Sheets-Sheet 1..

W. F. DI'DEN.

REVERSING GEAR.

No.- 393,219. Patented Nov. 20, 1888.

til-l 19.1mm "will *llllllllllllllI!llllIIIllliiilllllhlEllllllllllmnm wINIMIWW UNITED STATES PATENT QEEICE.

\VILLIAM F. DIDEN, OF MILTON, FLORIDA.

REVERSlNG-GEAR.

SPECIFICATION forming part of Letters Patent No. 393,219, dated November20, 1888.

Application filed JuneQl, 1988.

To all whom it may concern.-

Be it known that I, WILLIAM F. DIDEN, a citizen of theUnited States,residing at Milton, in the county of Santa Rosa and State of Florida,have invented certain new and useful Improvements in ReversingGear forSteam-Engines; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theannexed drawings, making a part of this specification, and to theletters and figures of reference marked thereon.

Figure 1 of the drawings is a front elevation of my improvedreversing-gear, showing it in an adjusted position in dotted lines; Fig.2, a top plan View; Fig. 3, a side elevation, partly in section; andFig. 4, a detail view showing the slotted plates through which the endsof the arms on the shifting device project.

The present invention has relation to that class of reversing valve-gearfor steam-engines wherein the usual link for this purpose is dispensedwith, and the object of the invention is to provide a more cheap,simple, easily-operating, and effective means whereby the motion of thesteam-engine may be quickly and effectively reversed, in order that theengineshaft may be made to revolve forward or backward at the willof theengineer.

The invention consists in the several details of construction,substantially as shown in the drawings, and hereinafter described andclaimed.

In the accompany i ng drawings, A represents the usual disk, which maybe provided with braces at the back to increase its strength, as shownat a, and has radial slots 1) diametrically opposite each other, throughwhich project the toothed sectors B, hereinafter described. Upon theouter face of the disk A are grooves c-to form guides for tongues d uponthe inner face of segmental plates O,said plates being connected to thedisk A by means of screws 6, which pass through the plates and throughslots f in the disk, as shown in dotted lines, Fig. 1.

The inner edges of the segmental plates 0 are inclined, as shown at Fig.3, so that when the plates are in position on the disk a dovetail spacewill be formed between them to receivea eorrespondingly-dovetailedrack-bar, D, thereby retaining it in a true diametrical Serial No.277.821. (No model.)

ened on the ends of the screws, which will firmly hold the plates inposition on the disk. To prevent any lateral displacement of the plates0 and forcing them to move in a straight line when being adjusted, thegrooves c and tongues d are provided,which have been hereinbeforereferred to.

The rack-bar is provided with a hub, i, to receive the collar 3' of thearm E, to which the valve F is connected, and said hub has an elongatedopening, 7c, through which extends the shaft Z of the disk.

The back or inner side of the disk A is formed with a fiat-sided hub,in; or, if preferred, it may be circular or other shape, as found mostdesirable, and upon this hub slides the disk G.

The toothed sectors B are suitably pivoted to the flanges H, east on theback of the disk A. Although any well-known means may be employedto-con'nect the sectors to the flanges, so that any frictional wear maybe taken up when the sectors become loose, I prefer to employ thetapering screws on and nuts 0, and, if desired, boxes may be used fittedin the holes of the flanges H to receive the screws. The hub m may alsobe changed from the form shown and made cylindrical, with feathers toreceive the disk G and prevent it turning thereon. These changes, comingwithin ordinary mechanical skill and being obvious to the ordinarymechanic, I reserve the right to make such changes without departingfrom the principle of my invention.

The toothed sectors B are connected to the sliding disk G by means oflinks pivoted thereto and to arms rprojecting from the hub s of the diskG. The disk G is caused to slide back and forth on the hub m by meansthat will now be described. The disk G has a groove around itsperiphery, in which fits a band or yoke, I, which is suitably providedwith arms K, extending through verticallyinclined slots in the sides Lof a verticallymovable plate, M, and also through horizontal slots at inthe stationary plates N. To the vertically-movable plate M is connectedthe bell-crank lever O by means of a link, '0, said lever engaging withone of two notches in a segmental bar, 1?; or any other preferred andwell-known means may be employed for holding the lever in its positionwhen the valve is reversed.

I desire it to be understood that any wellknown means may be employedfor operating the plate M, and therefore I do not desire to confinemyself to that shown, as it is evident that the non-essential featuresof the device that come within the judgment of ordinary mechanical skillmay be variously modified and changed and still come within the scope ofmy invention. When the lever O is brought to the position shown indotted lines, Fig. 1, the plate M will be raised, and by means of theinclined slots in the sides L of the plate the medium of the arms K,which enter the slots, the inclined slots acting as cams on the Havingnow fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The disk A and movable rack-bar D, in combination with the toothedsectors B, pivoted on the disk, and the sliding disk G, connected withthe sectors by means of suitable links, substantially as and for thepurpose set forth.

2. The combination, with the disk A and toothed sectors B, of theadjustable segmental plates 0 and the rack-bar D,'located between theplates, substantially as andfor the purpose described.

3. The cornbination, with the toothed sectors B and disk A,havinggrooves c on its face, of the rack-bar D and adjustable segmental plates0, having tongues d upon their inner faces, substantially as and forthe-purpose set forth.

4. The combination, with the sliding disk G, toothed sectors B, and diskA, of the dovetail rack-bar D and the adjustable segmental plates 0,having inclined edges 9, substantially as and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

WILLIAM F. DIDEN.

\Vi tn esses:

F. M. HARRISON, J. A, HARRIsoN.

